Plans have been submitted for a new mixed-use megatall skyscraper in China that would rise almost half a mile high. Designed by bKL Architecture, the H700 Shenzhen Tower is still in the early stages of development, but would reach a height of 739 m (2,424 ft), surpassing all current skyscrapers in height except the Burj Khalifa and the work-in-progress Jeddah Tower. It would also easily eclipse the current second-tallest skyscraper in the world, China's 632 m (2,073 ft) Shanghai Tower.

Developed by the Shenzhen Kingkey Group, renders depict a sleek, tapered building topped by a large sky garden. Extensive landscaping includes a plaza with retail, civic, and institutional areas.

The project is actually just the most interesting of a larger plan for Shenzhen's Caiwuwei financial and commercial area, and would potentially be linked by flyover to another nearby megatall skyscraper, itself rising to a not-inconsiderable 680 m (2,230 ft). This unnamed tower would also be developed by the Shenzhen Kingkey Group.

We can expect to learn a lot more about the H700 Shenzhen Tower in the coming months, if indeed it does get the green light to move forward.